Improvements in or relating to setting or adjusting means for variable-capacity electrical condensers and other instruments whereby a law or formula may be introduced
摘要
申请公布号
GB385404(A)
申请公布日期
1932.12.29
申请号
GB19310031972
申请日期
1931.11.18
申请人
PYE RADIO LIMITED;ERNEST VICTOR ROOT;CHARLES EDWARD MEYER BUTLER
